EPCOS B57127P0100M301 Thermistor 10Ω, 31 x 7mm

RS Stock No.:
Mfr. Prt No.:

Technical Reference

Legislation and Compliance

RoHS Certificate of Compliance

RS Components
RoHS Certificate of Compliance

EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.

Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.

RS definition of RoHS Compliance:

  • The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
  • and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering

The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:

PBB (Polybrominated Biphenyls)0.1%
PBDE ( Polybrominated Diphenyl Ethers)0.1%
Hexavalent Chromium0.1%
DEHP (Bis (2-Ethylhexl) phthalate)0.1%
BBP (Benzyl butyl phthalate)0.1%
DBP (Dibutyl phthalate)0.1%
DIBP (Diisobutyl phthalate)0.1%

The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".

RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.

Compliant Product Details
RS stock number 1218219
Product description EPCOS B57127P0100M301 Thermistor 10Ω, 31 x 7mm
Manufacturer / Brand EPCOS
Manufacturer part number B57127P0100M301

RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK

Statement of Conformity

RS Components
Statement of Conformity

This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.

Compliant Product Details
RS stock number 1218219
Product description EPCOS B57127P0100M301 Thermistor 10Ω, 31 x 7mm
Manufacturer / Brand EPCOS
Manufacturer part number B57127P0100M301

The foregoing information relates to product sold on, or after, the date shown below.


Date Jul 18, 2024

RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132

Country of Origin: CN

Product Details

EPCOS B57127P0...M301 NTC Thermistors for Inrush Current Limiting

P27 Series NTC thermistors from EPCOS are constructed with a UL 94 V-0 flame retardant coating. These NTC thermistors have kinked, tinned copper wire leads with a lead pitch of 7.5 mm.

APPROVALS : UL 1434 (file number E69802)

Stable electrical characteristics
Solderable terminals in accordance with IEC 60068-2-20
Tolerance ±20%

Product Application Information

B57127P0***M301 NTC thermistors are designed for inrush current limiting. Suitable applications include peripheral communication equipment such as switch mode power supplies and soft start motors such as vacuum cleaners.


Attribute Value
Series B57127P0***M301
Temperature Coefficient Type NTC
Thermal Time Constant 200 s
Resistance @ 25 °C 10 Ω
Tolerance ±20 %
Application Inrush Current Limiting, Soft Start Motor, Switching Power Supply
Maximum Power Rating 10 W
Length 31 mm
Depth 7 mm
Dimensions 31 x 7 mm
Maximum Operating Temperature +65 °C
Minimum Operating Temperature 0 °C
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